In the Park, you must be able to tell the difference in pitch.
The park attendant whistles a number of notes that the birds must copy. You move the birds around so that they sing the same scale as the park attendant. Click on the bird and keep the mouse button down while moving the bird to the place of the bird it is to replace.
You can listen to the birds' tones by clicking on each bird. If you click on the park attendant, he will repeat his tones.
When the birds have been placed in the desired order, click on the start sign to the left of the park attendant, and the birds will sing in the selected order.
The game will gradually become more and more difficult. More birds will appear, and the tones will be closer together. The game is closed by clicking on the exit button.